Polyhedrons: basic definitions and classification
Decide if a body with $6$ faces, $4$ edges and $3$ vertexes is a polyhedron.
We identify every term of the relation of Euler to be able to determine if it is a polyhedron. Since we have that $$c = 6, \quad a = 4 \quad \text{ and } \quad v = 3$$
FALSE, the Euler relation is not satisfied since $6 + 3 \neq 4 +2$.